Results 51 to 60 of about 824 (202)

Late Mesoproterozoic Rapid True Polar Wander Recorded in the Jingeryu Formation, North China Craton

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract Disentangling short‐duration (≤10 Ma) true polar wander (TPW) events in the Precambrian presents a significant challenge, necessitating the acquisition of high‐resolution and ‐quality paleomagnetic data and well‐determined age relations. This study reports new paleomagnetic results from carbonate sequences of the Jingeryu Formation in the ...
Hanqing Zhao, Shihong Zhang, Jikai Ding, Qiang Ren, Jianping Qu, Kunkun Yang, Haiyan Li, Tianshui Yang, Huaichun Wu   +8 more
wiley   +1 more source

AstroGeoFit. A Genetic Algorithm and Bayesian Approach for the Astronomical Calibration of the Geological Timescale

Paleoceanography and Paleoclimatology, Volume 40, Issue 8, August 2025.
Abstract Variations in Earth's orbit and axial tilt induce climatic changes which are recorded in sedimentary deposits. The frequencies of these cyclical variations are integer combinations of the main secular frequencies of the solar system. Analyzing these cycles in sedimentary records can help establish an astronomical time scale for the geological ...
N. Hoang, J. Laskar, N. C. Hara, Y. Wu, A. Sultanov, M. Sinnesael, T. Westerhold, P. Bujons   +7 more
wiley   +1 more source

Cyclostratigraphic Analysis and Depositional Environment Evolution of the Third Member of Eocene Shahejie Formation in the Laizhou Bay Sag, Southern Bohai Bay

Journal of Marine Science and Engineering
This study conducts a cyclostratigraphic analysis of the third member of the Eocene Shahejie Formation (Es3) in the Laizhou Bay Sag, Bohai Bay Basin, to investigate the influences of astronomically driven climate variations on sea-level changes ...
Jun-E Ni, Taiju Yin, Yuqing Zhang, Peng Liu, Zhongheng Sun, Chengcheng Zhang   +5 more
doaj   +1 more source

Coring the sedimentary expression of the early Toarcian Oceanic Anoxic Event: new stratigraphic records from the Tethys Ocean [PDF]

Scientific Drilling, 2019
The Toarcian Oceanic Anoxic Event (T-OAE) interval was cored at Colle di Sogno and Gajum in the Lombardy Basin (Southern Alps, northern Italy). The Sogno and Gajum cores recovered 26.83 and 31.18 stratigraphic metres, respectively, of pelagic sediments ...
E. Erba, G. Gambacorta, S. Visentin, L. Cavalheiro, D. Reolon, G. Faucher, M. Pegoraro   +6 more
doaj   +1 more source

EVALUATING REPETITION IN SEDIMENTARY SUCCESSIONS USING HIGH RESOLUTION INTEGRATED STRATIGRAPHY: AN EXAMPLE IN THE LOWER PLIOCENE SEQUENCE OF ODP HOLE 975B

Rivista Italiana di Paleontologia e Stratigrafia, 2010
The Lower Pliocene succession recovered at ODP Hole 975B (Balearic Basin, western Mediterranean) displays a sudden increase in sedimentation rate, in disagreement with the lithological homogeneity that characterizes the succession.
AGATA DI STEFANO
doaj   +1 more source

Newfoundland Neogene sediment drifts: transition from the Paleogene greenhouse to the modern icehouse [PDF]

Scientific Drilling, 2015
This workshop brought together specialists from various fields to develop a drilling proposal to fill the "Oligo-Miocene Gap" that exists in our understanding of the functions of Earth's systems.
O. Friedrich, R. D. Norris, P. A. Wilson, B. N. Opdyke   +3 more
doaj   +1 more source

Geomagnetic Excursions Recorded in North Atlantic IODP Expedition 395C Sites U1555 and U1563

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract By studying deep‐sea drilled records from the North Atlantic Ocean, several magnetic instabilities of short duration, such as the Iceland Basin (188 ka), the Björn (1,255 ka) and the Gardar (1,460 ka) excursions, were discovered. These records have contributed to our understanding of Earth's magnetic field and are the foundation of the ...
Anita Di Chiara, Sara Satolli, Sarah A. Friedman, Deepa Dwyer, Gary D. Acton, Tom Dunkley Jones, Boris Theofanis Karatsolis, Paul N. Pearson, Takuma Suzuki, Sevasti Modestou, Suzanne O'Connell, Halima Ibrahim, Claire E. Jasper, Danielle E. LeBlanc, Saran Lee‐Takeda, Thena Thulasi, Deborah E. Eason, Matthias Sinnesael, Katharina Hochmuth, Anne Briais, Ross Parnell‐Turner, Leah J. LeVay, Expedition 395C/395 Science Party   +22 more
wiley   +1 more source

Obliquity-paced summer monsoon from the Shilou red clay section on the eastern Chinese Loess Plateau

Open Geosciences
The red clay of the Chinese Loess Plateau (CLP) is an important geological archive for understanding the variability in the late Neogene East Asian monsoon.
Xu Silu, Chen Jiasheng
doaj   +1 more source

Cretaceous cyclic peritidal carbonates of the Apulia Carbonate Platform (Apulia, southern Italy) in a hierarchical sequence‐stratigraphic perspective: A case study from the Murge area (the Giovinazzo sea‐cliff section)

The Depositional Record, Volume 11, Issue 1, Page 328-353, February 2025.
Four different types of elementary sequences (condensed, catch‐down, catch‐up and give‐up) were recognised and interpreted in terms of relative sea‐level changes to reconstruct the relative sea‐level curve of the entire succession. The envelope of the reconstructed relative sea‐level curve was used to represent the long‐term accommodation change on the
Luigi Spalluto, Marco Petruzzelli, Luisa Sabato, Marcello Tropeano   +3 more
wiley   +1 more source

Petromagnetism and paleomagnetism of the Tarkhanian sediments in Kop-Takyl section (the Kerch Peninsula)

Russian Journal of Earth Sciences, 2020
A petromagnetic and paleomagnetic study of the Tarkhanian sediments of the Kop-Takyl section was carried out in order to obtain data on magnetostratigraphy of the Miocene sedimentary succession of Eastern Paratethys.
Pilipenko O V, Filina E V, Rostovtseva Yu V, Novruzov Z   +3 more
doaj   +1 more source